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audioconvert: move scaling to setup

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This commit is contained in:
Wim Taymans 2022-07-11 17:50:20 +02:00
parent 68f883ff77
commit c35006f040
3 changed files with 4 additions and 3 deletions
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1
spa/plugins/audioconvert/fmt-ops-c.c
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@ -237,7 +237,6 @@ static inline void update_dither_c(struct convert *conv, uint32_t n_samples)
uint32_t *state = &conv->random[0];
if (conv->method < DITHER_METHOD_TRIANGULAR) {
scale *= 0.5f;
for (n = 0; n < n_samples; n++)
dither[n] = lcnoise(state) * scale;
} else {

3
spa/plugins/audioconvert/fmt-ops-sse2.c
View file

@ -585,12 +585,12 @@ static inline void update_dither_sse2(struct convert *conv, uint32_t n_samples)
{
uint32_t n;
const uint32_t *r = SPA_PTR_ALIGN(conv->random, 16, uint32_t);
__m128 scale = _mm_set1_ps(conv->scale);
__m128 out[1];
float *dither = SPA_PTR_ALIGN(conv->dither, 16, float);
__m128i in[2];
if (conv->method < DITHER_METHOD_TRIANGULAR) {
__m128 scale = _mm_set1_ps(conv->scale * 0.5f);
for (n = 0; n < n_samples; n += 4) {
in[0] = _MM_XORSHIFT_EPI32(r);
out[0] = _mm_cvtepi32_ps(_MM_XORSHIFT_EPI32(r));
@ -598,7 +598,6 @@ static inline void update_dither_sse2(struct convert *conv, uint32_t n_samples)
_mm_store_ps(&dither[n], out[0]);
}
} else {
__m128 scale = _mm_set1_ps(conv->scale);
for (n = 0; n < n_samples; n += 4) {
in[0] = _mm_add_epi32( _MM_XORSHIFT_EPI32(r), _MM_XORSHIFT_EPI32(r));
out[0] = _mm_cvtepi32_ps(in[0]);

3
spa/plugins/audioconvert/fmt-ops.c
View file

@ -408,6 +408,9 @@ int convert_init(struct convert *conv)
if (conv->method == DITHER_METHOD_SHAPED_5 && conv->rate < 32000)
conv->method = DITHER_METHOD_TRIANGULAR;
if (conv->method < DITHER_METHOD_TRIANGULAR)
conv->scale *= 0.5f;
dither_flags = 0;
if (conv->method != DITHER_METHOD_NONE || conv->noise)
dither_flags |= CONV_DITHER;